ScheduleFu allows scheduling events with dates and times. It includes both the model and view portions of a calendar. It borrow heavily from acts_as_calendar (http://github.com/dball/acts_as_calendar) and calendar_helper (http://github.com/topfunky/calendar_helper).

An implementation of role-based policies and operations to help controllers lose weight.

Rails engine supporting multiple auth providers per user.

Add social network capabilities to your projects.

Allows to define special attributes for ActiveAdmin panel to make it AJAX loadable and auto-updatable

Allow to track changes of records which done through ActiveAdmin

Add pagination info to the response headers, GitHub style.

Apress-Api

Client lib to use attache server

Client lib to use attache server

Brightcontent core

MoIP integration with Catarse crowdfunding platform

Canvas LTI and OAUTH2 mountable engine

A Ruby-on-Rails interface to Datastax Enterprise. Intended for use with the DSE search nodes.

A devise extension for remote user authentication.

EasyAuth

Knowledge Base is a bunch of models for Ruby on Rails that you probably need to build your own

Metadata aggregation and enrichment for cultural heritage institutions.

Kuhsaft is a Rails engine that offers a simple CMS.

A small and simple efficient extension to Monologue that replace the default WYSIWYG editor with a Markdown editor.